Improved lubricating compound



UNITED STATES PATENT OFFICE.

IMPROVED LUBRICATING COMPOUND.

Specification forming part of Letters Patent No. 6,07l1, dated January30, 1849.

To all whom it may concern:

Be it known that I, ALONZO S. GRENVILLE, of Westborough, in the countyof Worcester and State of Massachusetts, have invented a new and usefulLubricating Composition or Anti-Friction Oil; and I do hereby declarethat the following is a full and exact specification of the same.

Take fifty gallons of lard-oil, sixteen gallons ofsperm-oil, orsixty-six gallons ot'either spermoil or lard-oil, and add to the samefourteen gallons of cod-liver or straits oil; next, to the said mixtureof oils add for each gallon thereof four ounces of carbonate ofmagnesia; to the whole, it more body is required, a small quantity ofFrench chalk--say three-quarters of an ounce-or white oxide of leadsaytwo and one-half drams-or both, may be added. The whole being wellcommixed constitutes an excellent and very cheap composition forlubricating the hearings or sunning parts of machinery.

I do not intend that in the manufac ure of the above the exactproportions of the ingredients as above stated shall always be followed,as they may often be varied to advancage, and particularly whenpreparing the composition for various temperatures.

The objectI have in view in using the straits or cod-liver oil inconnection with either the sperm or lard oil, or both, and magnesia isthat it causes the magnesia to be held in suspension in the mixture ofOHS. It cannot be suspended in either the sperm or lard oils, or in acompound of both; but as II will float on the straits-oil and not sinktherein, I combine the straits-oil with either or both the other kindsof oils in quantity sufficient to produce the powers of suspensionrequired in the mixture. The magnesia is a highly anti-corrosivematerial. When used in connection with the -oleaginous matterit almost,if not entirely, prevents corrosion, or, in other words, for allpractical purposes prevents the same.

I am aware that soap has been combined with either plumbago, steatite,or French chalk, or any two or more of the said substances.

I am also aware that it is a common matter to make a lubricatingcomposition of sperm-oil and either plumbago or some other substance orsubstances of like character. I lay no claim to the mixture of suchcompounds;

The soap generally used and made of either potash or soda, and, in fact,from most any alkali exrept carbonate of magnesia, does possess or havea corrosive property which prevents its being used to good advantage orwithout detriment on the bearings of machinery. I therefore makeuseofthecarbonateofmagnesia, and in order to keep it in suspension ineither the sperm-oil or laril-oilpor a mixture of the two, I add thestraits-oil to the sperm or lard oil, or both, or any other oil ormixture of oils of similar character-that is, whose powers of suspensionof the magnesia are not sufiicient.

I therefore claim as my invention The combination of the straits-oilwith the magnesia and the sperm-oil, lard-oil, or a mixture of the two,or any ole-aginous matter or matters possessing like powers ofnon-suspension, the same enabling me to make a very cheap andefficacious anti-friction oil to be applied to the lubrication ofmachinery.

In testimony whereof I have hereto set my signature this 24th day ofFebruary, A. D. 1845.

ALONZO S. GRENVILLE.

Witnesses:

HENRY MILLS, JAMES A'rlrnx's.

